Year 11 - Design and technology
Cams and pulleys
Core principles
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit pupils will develop core principles knowledge with an explicit focus on exam technique.
Lesson Summary
You will learn to describe the function of cams and pulleys using specific examples.
Key Notes
- Cams are used in mechanisms to change the direction of motion.
- Pulleys transmit rotary motion.
Vocabulary To Learn
- cam: a mechanical component that converts rotary motion into linear motion
- follower: a part of a machine that moves up and down or back and forth when it touches a cam
- friction: resistance which is encountered when two things rub together
- pulley: a grooved wheel over which a belt can run
Common Mistakes To Avoid
- The larger the diameter of a pulley wheel, the higher the output speed.
3 Quick Questions (With Answers)
1. Explain the lesson in two key points.
Cams are used in mechanisms to change the direction of motion. Pulleys transmit rotary motion.
2. What does this key word mean in this lesson? 'cam'
a mechanical component that converts rotary motion into linear motion.
3. Correct this common mistake.
Mistake: The larger the diameter of a pulley wheel, the higher the output speed. Correction: The smaller the pulley wheel, the quicker it will complete a rotation, therefore increasing the output speed.
More Lessons In This Unit
- Electronic systems Study Guide
- Energy and the impact on designs Study Guide
- Energy generation and storage Study Guide
- Gears Study Guide
- Levers and linkages Study Guide
- Material categories Study Guide
- Modern materials Study Guide
- New and emerging technologies Study Guide
- New and emerging technologies informing design decisions Study Guide
- Programmable systems Study Guide
- Smart materials Study Guide
Browse all guides in the Year 11 Design and technology guide library.